Publications
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Experimental whole-lake increase of dissolved organic carbon concentration produces unexpected increase in crustacean zooplankton density
The observed pattern of lake browning, or increased terrestrial dissolved organic carbon (DOC) concentration, across the northern hemisphere has amplified the importance of understanding how consumer productivity varies with DOC concentration. Results from comparative studies suggest these increased DOC concentrations may reduce crustacean zooplankton productivity due to reductions in resource qua
Authors
Patrick T. Kelly, Nicola Craig, Christopher T. Solomon, Brian C. Weidel, Jacob A. Zwart, Stuart E. Jones
Spawning site fidelity of wild and hatchery lake trout (Salvelinus namaycush) in northern Lake Huron
Fidelity to high-quality spawning sites helps ensure that adults repeatedly spawn at sites that maximize reproductive success. Fidelity is also an important behavioural characteristic to consider when hatchery-reared individuals are stocked for species restoration, because artificial rearing environments may interfere with cues that guide appropriate spawning site selection. Acoustic telemetry was
Authors
Thomas Binder, Stephen C. Riley, Christopher Holbrook, Michael J. Hansen, Roger A. Bergstedt, Charles R. Bronte, Ji He, Charles C. Krueger
Misapplied survey data and model uncertainty result in incorrect conclusions about the role of predation on alewife population dynamics in Lake Huron: a comment on He et al. (2015)
Drastic recent and ongoing changes to fish populations and food webs in the Great Lakes have been well-described (Riley et al. 2008; Barbiero et al. 2009; Nalepa et al. 2009; Fahnenstiel et al. 2010;Evans et al. 2011; Gobin et al. 2015), and uncertainty regarding their potential effects on fisheries has caused concern among scientists and fishery managers (e.g., Dettmers et al. 2012). In particula
Authors
Stephen C. Riley, Erin S. Dunlop
Collaborations, research, and adaptive management to address nonnative Phragmites australis in the Great Lakes Basin
Phragmites australis, also known as common reed, is a native North American wetland grass that has grown in North America for thousands of years. More recently, a nonnative, invasive variety of Phragmites from Eurasia is rapidly invading wetlands across the continental United States and other parts of North America, where it negatively impacts humans and the environment. U.S. Geological Survey sci
Authors
Kurt P. Kowalski
Population ecology of the sea lamprey (Petromyzon marinus) as an invasive species in the Laurentian Great Lakes and an imperiled species in Europe
The sea lamprey Petromyzon marinus (Linnaeus) is both an invasive non-native species in the Laurentian Great Lakes of North America and an imperiled species in much of its native range in North America and Europe. To compare and contrast how understanding of population ecology is useful for control programs in the Great Lakes and restoration programs in Europe, we review current understanding of t
Authors
Michael J. Hansen, Charles P. Madenjian, Jeffrey W. Slade, Todd B. Steeves, Pedro R. Almeida, Bernardo R. Quintella
Stock assessment in inland fisheries: a foundation for sustainable use and conservation
Fisheries stock assessments are essential for science-based fisheries management. Inland fisheries pose challenges, but also provide opportunities for biological assessments that differ from those encountered in large marine fisheries for which many of our assessment methods have been developed. These include the number and diversity of fisheries, high levels of ecological and environmental variat
Authors
Kai Lorenzen, Ian G. Cowx, R. E. M. Entsua-Mensah, Nigel P. Lester, J.D. Koehn, R.G. Randall, N. So, Scott A. Bonar, David B. Bunnell, Paul A. Venturelli, Shannon D. Bower, Steven J. Cooke
Fecal indicator organism modeling and microbial source tracking in environmental waters: Chapter 3.4.6
Mathematical models have been widely applied to surface waters to estimate rates of settling, resuspension, flow, dispersion, and advection in order to calculate movement of particles that influence water quality. Of particular interest are the movement, survival, and persistence of microbial pathogens or their surrogates, which may contaminate recreational water, drinking water, or shellfish. Mos
Authors
Meredith Nevers, Muruleedhara Byappanahalli, Mantha S. Phanikumar, Richard L. Whitman
Mercury accumulation and the mercury-PCB-sex interaction in summer flounder
Patterns in the relative differences in contaminant concentrations between the sexes of mature fish may reveal important behavioral and physiological differences between the sexes. We determined whole-fish total mercury (Hg) concentrations in 23 female summer flounder (Paralichthys dentatus) and 27 male summer flounder from New Jersey coastal waters. To estimate the change in Hg concentration due
Authors
Charles P. Madenjian, Olaf P. Jensen, David P. Krabbenhoft, John F. DeWild, Jacob M. Ogorek, Anthony R. Vastano
Number of genera as a potential screening tool for assessing quality of bryophyte communities in Ohio wetlands
Bryophytes (mosses, liverworts, and hornworts) have numerous advantages as indicators of environmental quality. A quality assessment index for bryophyte species assemblages (BQAI) was developed for the State of Ohio, USA. Reliable identification of bryophytes to species often requires considerable training, practice, and time. In contrast, reliable identification to genera for most bryophytes in O
Authors
William Schumacher, Martin A. Stapanian, Barbara Andreas, Brian Gara
Mercury accumulation, and the mercury-PCB-sex interaction, in lake whitefish (Coregonus clupeaformis)
We determined whole-fish Hg concentrations of 26 female and 34 male adult lake whitefish (Coregonus clupeaformis) from northern Lake Huron captured during November 2010. Subsampling from these 60 fish, Hg concentration was also determined in both the somatic tissue and ovaries (n=5), while methylmercury (MeHg) concentration was determined in whole fish (n=18). Bioenergetics modeling was used to as
Authors
Charles P. Madenjian, Mark P. Ebener, David P. Krabbenhoft
Seasonal and diel effects on acoustic fish biomass estimates: application to a shallow reservoir with untargeted common carp (Cyprinus carpio)
The aim of the present study was to understand how seasonal fish distributions affect acoustically derived fish biomass estimates in a shallow reservoir in a semi-arid country (Tunisia). To that end, sampling events were performed during four seasons (spring (June), summer (September), autumn (December) and winter (March)) that included day and night surveys. A Simrad EK60 echosounder, equipped wi
Authors
Imed Djemali, Daniel Yule, Jean Guillard
Management strategy evaluation of pheromone-baited trapping techniques to improve management of invasive sea lamprey
We applied a management strategy evaluation (MSE) model to examine the potential cost-effectiveness of using pheromone-baited trapping along with conventional lampricide treatment to manage invasive sea lamprey. Four pheromone-baited trapping strategies were modeled: (1) stream activation wherein pheromone was applied to existing traps to achieve 10−12 mol/L in-stream concentration, (2) stream act
Authors
Heather Dawson, Michael L. Jones, Brian J. Irwin, Nicholas S. Johnson, C. Michael Wagner, Melissa Szymanski